Double-acting pump.



A. STEINHAUER &T. D. VAN ETTEN.

DOUBLE ACTING PUMP.

APPLICATION FILED ms. 12, 1915.

Patented Jan. 30, 1917.

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A. STE INHAUER (KL T. D. VAN ETTEN.

DOUBLE ACTING PUMP.

APPLICATION FILED FEB. 12, 1915.

13,91 7., Patentedlfan. 30, 1917.

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AUGUST STEINHAUER AND THOMAS D. VAN ETTEN, F SIDNEY, OHIO.

DOUBLE-ACTING PUMP.

Specification of Letters Patent.

Application filed February 12, 1915. Serial No. 7,680.

'1 b all whom it may concern Be it known that we, AUGUST STEINHAUER and THOMAS D. VAN ETTEN, citizens of the United States, residing at Sidney, in the county of Shelby and State of Ohio, have invented certain new and useful Improvements in Double-Acting Pumps, of which the following is a specification.

This invention relates to improvements in double-acting pumps adapted to dispense gasolene or other liquids in measured quantities, and the improvements reside in the novel arrangement and construction of parts, substantially as herein shown and described and more particularly pointed out in the claim.

In the accompanying drawings, Figure 1 is a front view of the exterior of our improved pump, and Fig. 2 a view of the interior thereof, the front section of the casing being removed. Fig. 3 is a transverse section on line, 3-3, Fig. 1, and Fig. 4; is a vertical section on the longitudinal center of the pump. Fig. 5 is an enlarged detail section of one of the check-valve connections.

The pump is especially designed for either indoor or outdoor use, and to this end comprises a casing or housing made in two sections, 2 and 3, respectively, having hinged connections a at one side thereof whereby one of said sections, the front section 3 preferably, may be opened to disclose and give access to the pump proper which is supported upon the rear stationary section 2.

The opposite ends of the casing sections are semi-cylindrical in form to confine the two opposed pump cylinders 5 and 6, and the middle portions of said sections are widened transversely and shallower front to rear than the end portions to house the crank and operating mechanism for the pistons 7 and 8, respectively within said cylinders. Said pistons are connected by short shafts 9 to a yoke 10 which is engaged by a slide 11 having eccentric connection by a pin 12 with the large operating gear 1 1 rotatably mounted on the short stud shaft 15 which is screwed into the fiat middle wall of the rear section 2. A small pinion 16 and a crank shaft 17 and crank handle 18 serve to rotate gear 14-, and the handle 18 is detachably engaged with the crank shaft to permit the front section to swing open, see Fig. 3. The front section 3 is also provided with a vertical slot or window 19 at the right-hand side and flat middle portion thereof, and a double row of gage marks 20 are shown thereat in front of the index finger 21 on the end of yoke 10 to indicate the exact quanliquid discharged by repeated operations of the pump may be indicated by any suitable supplementary device adapted to be operated by the rotary movement of gear 14-.

Each pump cylinder is provided with sep arate heads 23 and 24: secured in place by tie rods 23, and the inner heads 23 are provided with packing glands 24 for the shafts 9. Each head is also provided with lateral bosses 25 for the intake and outlet ports 26 and 27, respectively, for each cylinder end, each boss 25 being provided with an internal screw-thread to receive one screw nipple 28 of a check-valve made of two semi-globular bodies 29 and 30 separably united at their meeting faces by a union nut 31, see Fig. 5.

Each body has a screw-nipple, and body 29 has a bridge or spider 32 with a central opening to slidably support the stem 33 of a valve 84 which is held to its seat 35 in the other body 30 by a coiled spring 36 sleeved on said stem between the valve and the bridge. Fig. 5 illustrates the check valve arranged to permit intake of liquid to cylinder 5 and to check a return How and the screw nipple 28 of body part 30'is connected with the T fitting 37 of the supply pipe 38. However, the same check valve is used on the outlet side of the cylinder to connect with the discharge pipe 39, only in this case the nipple of body part 30 having the valve seat is screwed into the boss 25 instead of into the fitting, thereby reversing the valve so that it will permit the liquid to flow out of the cylinder into the discharge pipe 39 and pre vent a return of liquid to the cylinder. Each cylinder is equipped in this way with four check valves, two at each end, and the intake valves are all connected to the same supply pipe 38 at the left, but said pipe is in sections, and the middle section 38 is projected or offset relatively to the other two to afford free and unobstructed movement of yoke 10. The bottom end of the supply pipe 38 connects with a tank in the ground or with any other source of supply, and the upper end of the discharge pipe 39 has a goose-neck or other suitable spout or connection 40 to direct the outflow to any desired place or receptacle.

What We claim is:

A casing made in separable sections having enlarged ends and a reduced middle portion, in combination with a pair of pump cylinders mounted in opposed relation With- 10 in said casing, and pistons Within said cylinders having crank operating connections located and mounted Within and upon said reduced middle portion of the casing.

In testimony whereof We afiix our signatures in presence of two Witnesses.

AUGUST STEINHAUER. THOMAS D. VAN ETTEN. lVitnesses:

HELEN SMITH, CHAS. E. HALL.

Copies 01' this patent may be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, D. 0. 

